Narrow-ware or ribbon loom.



E. R. HOLMES. NARROW WARE 0R RIBBON LOOM.

APPLICATION FILED MAR.Z0, 1909.

Patented May 17, 1910.

2 SHEETS8HEET l.

E. R. HOLMES. NARROW WARE OR RIBBON LOOM.

APPLICATION FILED MAR. 20, 1909.

Patented May 17, 1910 2 SHEETS-SHEET 2.

. a top or plan view of a shuttle, and the ten UNITED STATES PATENTOFFICE.

ELBRIDGE R. HOLMES, OF WORCESTER, MASSACHUSETTS, ASSIGNOR T0 CROMPTON 85KNOWLES LOOM WORKS, A CORPORATION OF MASSACHUSETTS.

NARROW-WARE OR RIBBON LOOM.

To all whom it may concern:

Be it known that I, ELBRIDGE R. HOLMES, a citizen of the United States,residing at lVorcester, in the county of Worcester and State ofMassachusetts, have invented certain new and useful Improvements inNarrow-Ware or Ribbon Looms, of which the following is a specification.

My invention relates to narrow-ware or ribbon looms, and particularly tothe tension mechanism on the shuttles, for the quill or bobbin, andmeans to automatically vary the tension of said mechanism, during theoperation of the loom.

In weaving certain kinds of fabric on narrow-ware or ribbon looms, it isdesirable and necessary to have the tension on the quill or bobbin onthe shuttle, changed or varied for a certain number of picks, and theobj ect of my invention is to provide tension mechanism on the shuttlesfor the quill or bobbin in the shuttles, and means to automatically varythe tension of said mechanism, at predetermined intervals.

My invention consists in certain novel features of construction of myimprovements, which may be adapted to be applied to and used on any wellknown type of narrowware or ribbon looms.

I have only shown in the drawings a detached portion of a narrow-ware orribbon loom, with my improvements combined therewith, sufficient toenable those skilled in the art to understand the construction andoperation thereof.

Referring to the drawings :Figure 1 is a vertical transverse crosssection, through a narrowware loom, showing the lay and other parts, andmy improvements combined therewith, looking in the direction of arrow a,Fig. 2. Fig. 2 is a sectional rear view of the lay, and other parts, online 2, 2, Fig. 1, looking in the direction of arrow 6, same figure; theloom side, the breast-beam, and some other parts are not shown in thisfigure. Fig. 3 shows a part of the mechanism shown in Fig. 2, detached,and in a different position. Fig. 4 is, on an enlarged scale,

sion mechanism thereon for the quill or bobbin, and, Fig. 5 is a rearedge view of the shuttle shown in Fig. 4, looking in the direction ofarrow 0, same figure.

In the accompanying drawings, 1 is a loom side or end frame, 2 thebreast-beam, 3 a

Specification of Letters Patent.

Application filed March 20, 1909.

Patented. May 17, 1910. Serial No. 484,810.

cross-girt, 4 the lay-beam carried on the laysword 5, which is mountedat its lower end on the cross shaft 6, which is carried in brackets 7secured on the loom side 1. The lay-sword 5 is connected, through thecrank connector 8, with the crank shaft 9, in the usual way. Thelay-beam 4 has secured thereon, at certain distances apart, a series ofshuttle blocks 10, carrying the shuttle guides 11 for the shuttles 12,operated from the shuttle rack 13, see Fig. 1, in the usual way. All ofthe above mentioned parts, except the tension mechanism on the shuttles,are of the usual and well known construction in narrow-ware looms.

I will now describe my improvements for automatically varying thetension on the quill or bobbin in the shuttle, when the loom is inoperation, from an indicating or pattern mechanism, not shown, which maybe located at one end of the loom.

A connector 14 extends downwardly from an indicating surface, or apattern'indicator or finger, not shown. On the lower end of theconnector 14 is a rod-head 14, which is in this instance pivotallyconnected to a lever 15 fast on a shaft 16. A second lever 17 has itshub 17 fast onthe shaft 16, see Fig. 1, and extends downwardly, and hasan elongated slot 17 in its lower end, in which is adjustably secured astud 18, to which is pivotally connected one end of a forwardlyextending rodl9. The other end of the rod 19 is slightly bent upwardly,and is adapted to slide loosely in a guide 20, which has a hub 20, whichis pivotally mounted .on a stud 21 secured on a stand 22. The stand 22has in this instance a hub 22 on its lower end, which is loosely mountedon the shaft 6. The upper end of the stand 22 is adjustably secured tothe cross-girt 3, by a bolt 22, see Fig. 2.

The front end of the rod 19 has adjustably secured thereon, in thisinstance by set screws 23, a plate 24, which has an inclined orcam-shaped projection 24, in this instance on its upper edge, at itscentral portion. The plate 24 is adapted to move back and forth, or havea reciprocating movement with the rod 19, according to the indicationsof the indicating or pattern mechanism, not shown, through the connector14, lever 15, and lever 17 A roll 25, having a grooved or recessedperiphery, extends over the upper edge of the plate 24, and is adapt edto rest on said plate. Said roll 25 is loosely mounted on a stud 26,which is secured in a vertically extending plate 27, pivotally supportedon a bolt 28, held in ears or lugs 22 on the upper enlarged end 22 ofthe stand 22. The upper end of the plate 27 carries a set screw 29,which may be turned in or out, and its head is adapted to bear againstan upward extension 22 on the stand 22, see Fig. 2, to limit the inwardmovement of said plate 27. The upper end of the plate 27 is preferablymade with a curved or cam-shaped edge 27 as shown in Fig. 1, and isadapted to be moved into the path of and extend under a roll 30, whichis pivotally mounted on a stud 30 on the inner end of a lever 31, thehub 31 of which is mounted on a shaft 32, see Fig. 3. An arm 31extending out from the hub 32', carries a set screw 31*, see Fig. 1,which is adapted to engage with its inner end the lower side of thelay-beam 4, to limit the downward movement of the roll 30, when it isreleased from the plate 27, as shown in Fig. 3. The shaft 32 is mountedin brackets 33 on the laybeam 4. A helically coiled contraction spring34 is attached at one end to the lower end of the plate 27, and at itsother end to the loom girt 3, and acts to move outwardly the upper endof the plate 27, as shown in Fig. 3. A lever 35, (there is a lever 35for each shuttle block 10), has its hub 35 fast on the shaft 32, and theend of each lever 35 is connected with the lower end of an upwardlyextending rod or wire 36. The upper end of each rod or wire 36 issuitably guided in a guide plate 37, at the rear of the lay-beam, seeFig. 2, and is adapted to be moved up into the path of, and be engagedby a wheel 38, as the shuttles move back and forth, and also be moveddown out of the path of the wheel 38. There is one wheel 38 for eachshuttle 12, and the wheel is preferably located on the rear edge orpart' of the shuttle, and is fast on a shaft 39, see Figs. 4 and 5,which shaft extends inwardly to the open part of the shuttle, and hassecured on its inner end a cylindrical cam 40. The cam 40 is provided inthis instance with three high, and three low V shaped notches, disposedalternately, see Fig. 4, which are adapted to engage an extension 41 ona spring wire 41. The spring wire 41 acts to press the pad 42 on thespring wire 42, toward the quill or bobbin 43.

The rotation of the wheel 38, throughits engagement with the upright rod36, in one direction, or the other, for one-sixth of its revolution,will vary the tension on the quill or bobbin 43, according as theextension 41 on the spring wire 41, engages a lower, or a higher notchon the cylindrical cam 40.

The stand 22 has its lower end loosely mounted on the lay-sword shaft 6,as a fixed axis, so that in case of any adjustment of the stand 22 onthe cross-girt 3, toward the front or the back of the loom, the positionof the parts carried on said stand, relative to the roll 30 moving withthe lay, will not be changed, that is the arc of the circle in which theupper edge of the plate 27 moves, in the adjustment of the stand 22,will always be the same relatively to the arc of the circle in which thelay-beam moves.

From the above description in connection with the drawings the operationof my improvements will be readily understood by those skilled in theart.

As stated above my improvements are intended to be used on narrow-warelooms, in which it is desirable to vary the tension on the quill orbobbin in the shuttle. For example in weaving elastic fabric, thetention on the quill or bobbin in the shuttle may be more during theweaving of the fabric where the rubber is under tension and where thefabric is to be elastic, but where the fabric is not to be elastic, thenthe tension on the quill or bobbin in the shuttle may be reduced. Incase of weaving fabric where it is desirable to have a less tension onthe quill or bobbin in the shuttle, the indicating surface or patternmechanism connected with my improved mechanism, and for operating mymechanism, will be so made that a certain number of filling threads willbe put into the fabric while the indicating or pattern mechanism isstat-ion ary, the tension on the quill or bobbin in the shuttleremaining constant during such time.

In case the tension on the quill or bobbin in the shuttle is to beincreased for a certain number of picks, then, through the operation ofthe indicating or pattern mechanism, not shown, the rod 19 and plate 24have a longitudinal movement communicated thereto at the proper time, sothat the cam-shaped projection 24 on the cam plate 24 will engage theroll 25 on the stud 26 on the plate 27, and move said plate from itsinclined position, shown in Fig. 3, to the perpendicular position shownin Fig. 2, against the action of the spring 34, and as the lay movesbackward on its backward stroke, the roll 30 on the lever 31 will be inalinement with the upper edge 27 of the plate 27, and will ride up onsaid plate and raise the lever 31 and rock the shaft 32, to raise thewire 36 through the arm 35, and bring the upper end of the wire in thepath of the wheel 38 on the shuttle, as shown in Fig. 2. The movement ofthe shuttle from left to right in Fig. 2, will cause the wheel 38 toturn a sixth of a revolution, and also the cam 40, to cause a high parton said cam to engage the extension 41 on the wire 41, and move inwardlythe wire 42, and the pad 42 thereon, to increase the tension on thequill or bobbin 43.

When it is desired to decrease the tension on the quill or bobbin 43,the plate 24, through the indicating or pattern mechanism, not shown, isagain moved longitudinally to bring the cam-shaped projection 24 underthe roll 25, and when the lay is in its forward position, the plate 27will be moved from the position shown in Fig. 3 into its perpendicularposition shown in Fig. 2, and on the backward movement of the lay theroll 30, traveling on the cam-shaped edge 27 of the plate 27 will raisethe wire 36 to bring it into the path of the wheel 38 on the shuttle 12,and on the next throw of the shuttle, a one-sixth revolution will becommunicated to said wheel 38 and to the cam 40, to bring a low part onsaid cam opposite the projection 41 on the spring 41, to decrease thetension on the spring wire 42 and the pad 42.

It will be understood that the details of construction of myimprovements may be varied if desired.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In a narrow-ware loom, a shuttle, atension mechanism on the shuttle for the quill or bobbin, and means toautomatically vary the tension of said mechanism during the operation ofthe loom, said means under the control of an indicating or patternmechanism.

2. In a narrow-ware loom, a series of shuttles having tension mechanismfor the quills or bobbins, and automatic means for simultaneouslyvarying the tension of said tension mechanism during the operation'ofthe loom.

3. In a narrow-ware loom, a shuttle, a tension mechanism on the shuttlefor the quill or bobbin, a movable cam on the stationary part of theloom, connections intermediate said tension mechanism and said cam, andautomatic means for moving said cam to vary the tension of saidmechanism during the operation of the loom.

ELBRIDGE R. HOLMES.

Witnesses:

J OHN C. DEWEY, MINNA HAAS.

